Finding the Fourth Proportional to 2,426.16, 3,638.16 and 1,128

Step by Step Solution

1. Step 1: Write the proportion equation
   2,426.16 : 3,638.16 = 1,128 : x
2. Step 2: Convert to fraction form
   2,426.16/3,638.16 = 1,128/x
3. Step 3: Cross multiply
   2,426.16x = 3,638.16 × 1,128
4. Step 4: Simplify right side
   2,426.16x = 4,103,844.48
5. Step 5: Solve for x
   x = 4,103,844.48/2,426.16
6. Step 6: Final answer
   x = 1,691.50